Car roof



March 17, 1936. c. D. BONSALL v CAR ROOF original Filed March 3,1935' i/N VENTO n:

Patented Mar. 17, 1936 UNITED STATE TET OFFICE CAR RGOF Charles DavidBonsall,

Pittsburgh, Pa., assignor to P. H. Murphy Company, New Kensington,

Pa., a corporation of Pennsylvania 7 Claims.

This application is a division of my co-pending application for patentfor improvement in Car roof, Serial No. 659,490 filed March 3, 1933.

It is quite common to load certain commodities, such as flour andcement, into freight cars, while they are still hot from the process ofmanufacture, with the result that the roofs of the cars sometimes sweatenough to cause considerable damage to such commodities. Gne of theprincipal objects of the present invention is to minimize such sweating.Other objects are to protect the lading from rapid changes oftemperature and to design a, construction of roof that will beeconomical of material and labor, of great strength and will haveadvantages hereinafter appearing.

The invention consists in the parts and in the arrangements andcombinations of parts hereinafter described and claimed.

In the accompanying drawing, which forms part of this specication, andwherein like reference numerals ref-er to like parts wherever theyoccur,

Fig. l is a plan View of a portion of a cellular car roof embodying myinvention,

Fig. 2 is an enlarged vertical transverse section through one-half ofthe roof on the line 2 2 of Fig. 1,

Fig. 3 is a section on the line 3 3 of Fig. l; and

Fig. 4 is a similar section illustrating a modification of theinvention.

The construction illustrated in Fig. 1 comprises side plates I, roofsheets 2 that extend from side plate to side plate and have their endsbent down and secured to the side plates. Each roof sheet is offset toform an upper panel 3, a lower panel 4 and a substantially vertical webportion 5 that extends crosswise of the car near the middle of thesheet. The Z-shaped sheets thus formed are arranged with their verticalwebs spaced such distances apart that the top outer margin of one sheetwill extend somewhat beyond the web of the next adjacent sheet and reston the upper panel thereof and with the outer margin of the lower panelof the last mentioned sheet extending under and somewhat beyond the webof the iirst mentioned sheet, all of the sheets being arranged in likemanner. Adjacent sheets are secured together by welds 5 located oppositethe exposed edge of one sheet and atwise with respect to the adjacentsheet. In this manner each sheet is connected to the adjacent sheets bytwo continuous welds 1, 8, one of said welds l joining the upper panelof one sheet to the upper panel of the sheet neXt adjacent thereto andthe other (Cl. S-5.4)

weld 8 joining its lower panel to the lower panel of the sheet nextadjacent thereto.

In the construction above described, no other work is required on thesheets than that of offsetting; and consequently there is no need of 5shearing the side margins to conform to any specied dimension.

In the construction illustrated in Fig. 4, each sheet is oset along itslongitudinal middle line to form an upper panel 3, a lower panel 4 and a10 substantially vertical web portion 5. The upper half or panel has adownturned flange 9 along its outer margin and the lower half or panel 4has an upstanding flange It along its outer margin. Such sheets arenested together in such manner that the vertical web member 5 of onesheet is located between the downturned flange of one sheet and theupturned ilange of another sheet. At the top and bottom of each such webmember, thev outermost sheets are welded as at I I, to such web member.Preferably the innermost sheets also are welded, as at I2, at theiredges to such web members. The vertical web member 5 is thus thoroughlyreinforced by the adjacent sheet flanges 9 and I0 and the location ofthe welds I I 25 and I2 at the top and bottom of the roof makes themexceptionally suitable for their work.

What I claim is:

1. A car roof construction comprising car side plates and aself-supporting cellular car roof supported on said side plates, saidroof comprising roof sheets each of which extends from side plate toside plate and has flat ends that are bent downwardly beyond said sideplates, the portion of each sheet between said flat ends being formedinto an upper panel, a lower panel and a web integrally connecting saidpanels with the end portions of the web decreasing in depth to thevanishing point at the eaves, welds connecting said adjacent upperpanels together and welds connecting adjacent lower panels together.

2. A car roof construction comprising car side plates and aself-supporting cellular car roof supported on said side plates, saidroof comprising upper panels, lower panels and vertically disposed webmembers integrally connecting upper and lower panels all merging at theeaves into plain end portions that are bent down over the side plates,welds connecting adjacent upper panels together adjacent to said webmembers and welds connecting adjacent lower panels together adjacent tosaid web members.

3. A car roof construction comprising car side plates and aself-supporting cellular car roof supported on said side plates, saidroof comprising roof sheets each of which extends from side plate toside plate and has ilat ends that are bent downwardly beyond said sideplates, the portion of each sheet between said at ends being offset nearthe middle thereof to form a web and an upper panel and a lower panelwith the end portions of the web decreasing in depth to the vanishingpoint at the eaves, the free margins of the upper panels overlapping theweb margins of adjacent panels and the free margins of the lower panelsunderlapping the web margins of adjacent panels and welds securing thelapped portions together.

4. A car roof construction comprising car side plates and aself-supporting cellular car roof supported onV said side plates, saidroof comprisingroof sheets each of which extends from side plate to sideplate and has at ends that are bent downwardly beyond said side plates,the portion of each sheet between said at ends being oiset near themiddle thereof to form a web and an upper panel and a lower panel withthe end portions of the web decreasing in depth to the Vanishing pointat the eaves, the free margins of the upper panels overlapping the webmargins of adjacent panels and the free margins of the lower .panelsunderlapping the web margins Vof adjacent panels and welds along thefree edges of the respective panels for securing them to theadjacentpanels.

5. A cellular car roof construction comprising side plates and aself-supporting cellular car roof secured to said side plates, said roofcomprising sheets that extend from side plate to side plate and haveflat end portions that are bent downwardly beyond the side plates,`theportions of each sheet between the side plates being offset near themiddle to form upper and lower panels and a web connecting them with theend portions of the web decreasing in depth to the vanishing point atthe eaves, said sheets being so arranged that the web of one sheet liesbetween the side edges of adjacent sheets and welds at the top andbottom of the webs for uniting such web to the adjacent panels.

6. A cellular car roof construction comprising side plates and aself-supporting cellular car roof secured to said side plates, said roofcornprising sheets that extend from side plate to side plate and have:dat end portions that are bent downwardly beyond the side plates, theportions of each sheet between the side plates being offset near themiddle to form upper and lower panels and a web connecting them with theend portions of the web decreasing in depth to the Vanishing point atthe eaves, said sheets being so arranged that the web of one sheet liesbetween the Side edges of adjacent sheets, and welds at the top andbottom of the webs uniting such web to both the top and bottom ofadjacent flanges. v

7. A cellular car roof construction comprising side plates and aself-supporting cellular car roof secured to said side plates, said roofcomprising sheets that extend from side plate to side plate and haveflat end portions that are bent downwardly beyond the side plates, theportions of each sheet between the side plates being oifset near themiddle to form upper and lower panels and a web connecting them with theend portions of the web decreasing in depth to the Vanishing point atthe eaves, said sheets being so arranged that the web of one sheet liesbetween side ilanges of adjacent sheets and welds at the top and bottomof the Webs uniting such web to the adjacent panels.

CHARLES DAVID BONSALL.

